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EC number: 500-041-9 | CAS number: 25723-16-4 1 - 6.5 moles propoxylated
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The structure-fragment calculation method indicates a log Pow range of 0.01 to 1.50 for components of this UVCB mixture. The upper limit value of log Pow = 1.50 is used to conservatively represent partitioning of the components of this UVCB substance in the chemical safety assessment.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 1.5
- at the temperature of:
- 25 °C
Additional information
Propylidynetrimethanol propoxylated has a molecular weight distribution resulting in a range for the values of of the octanol water partitioning equilibrium. Log Pow ranges from0.5 to 1.6 at 23 °C.
Octanol water partitioning of this UVCB mixture was investigated using the HPLC method (EU Method A.8) and under the conditions of the study, the partition coefficient n-octanol/water (log Pow) for components ranged from 0.5 to 1.6 (HPLC method) Octanol water partitioning of this UVCB mixture was investigated using the HPLC and shake-flask method (EU Method A.8) and under the conditions of the study, the partition coefficient n-octanol/water (log Pow) for components ranged from less than 0.3 to 1.6. The results were suspected to be influenced by surface-active properties of the substance (surface tension = 56.9 nM/m at 20°C). Therefore, calculated values were generated for the lowest- and highest-molecular weight homologues of this mixture using the ClogP structure-fragment method. These calculated values indicate a log Pow range of 0.01 to 1.50 for this UVCB mixture. The upper limit value of log Pow = 1.50 is used to conservatively represent partitioning of the components of this UVCB substance in the environmental exposure assessment. It should also be noted that these values of log Pow represent that for aqueous pH at which the substance is not ionized. The components of this substance possess hydroxyl groups, which have estimated pKa values ranging from 14.0 to 15.3. Therefore, these substances will occur as partly- or fully-ionized species under the neutral pH conditions occurring in the environment, and will have hydrophobicity which is much less than indicated from log Pow.
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